Car Loan + Credit Card + Small Store Card: Which to Pay First?

    When your debts have wildly different balances and interest rates, which strategy wins? Let's walk through a real example.

    Meet James. He's 35, works in IT, has a reliable car (that he's still paying off), and two credit cards he wishes he'd never opened. His total debt: £15,980.

    Here's his mix:

    Car Loan:

  1. Balance: £12,000
  2. APR: 6.5%
  3. Monthly payment: £350
  4. Monthly interest: ~£65
  5. Credit Card:

  6. Balance: £3,500
  7. APR: 19.99%
  8. Monthly payment: £105
  9. Monthly interest: ~£58
  10. Store Card:

  11. Balance: £480
  12. APR: 22.99%
  13. Monthly payment: £25
  14. Monthly interest: ~£9
  15. Total monthly payments: £480

    Total monthly interest: £132

    James can scrape together an extra £75/month by cutting back on dining out and pausing his gym membership. But where should it go?

    The Temptation: Attack the Car Loan

    James's first instinct was to throw the extra £75 at the car loan. "It's my biggest debt," he said. "Once it's gone, I'll have so much breathing room. That £350/month payment will be free to throw at the credit cards."

    Here's the problem: The car loan has the lowest interest rate. At 6.5% APR, it's not bleeding him dry the way the credit cards are at 19.99% and 22.99%.

    If James puts his extra money toward the car loan, he's letting the high-interest credit cards keep charging him massive interest every month. That's expensive.

    Running the Numbers

    We ran James's debts through our [Debt Payoff Planner](/calculators/debt-payoff-planner). Here's what it showed:

    Snowball Strategy (Smallest Balance First)

    James tackles the £480 store card first, then the £3,500 credit card, then the car loan:

  16. Time to debt-free: ~3.8 years
  17. Total interest paid: £2,650
  18. The store card is gone in about 3 months—quick win!
  19. Credit card gone by month 18
  20. Final 27 months crushing the car loan
  21. Avalanche Strategy (Highest APR First)

    James tackles the 22.99% store card first, then the 19.99% credit card, then the car loan:

  22. Time to debt-free: ~3.7 years
  23. Total interest paid: £2,580
  24. Saves about £70 compared to Snowball
  25. Same order as Snowball (they target the same debt first)
  26. What If James Targets the Car Loan First? (Biggest Balance)

    If James puts his extra money toward the car loan (biggest balance, lowest rate):

  27. Time to debt-free: ~3.9 years
  28. Total interest paid: £2,880
  29. COSTS £300 MORE than Avalanche
  30. Takes 2+ months longer
  31. That £300 difference isn't nothing. It's several months' worth of extra payments. Money James could use for an emergency fund or a holiday once he's debt-free.

    Why High-Interest Debt Hurts More

    Let's break down what's actually happening each month:

    Store Card: £9/month in interest on £480 balance = 1.9% monthly

    Credit Card: £58/month in interest on £3,500 balance = 1.7% monthly

    Car Loan: £65/month in interest on £12,000 balance = 0.5% monthly

    The car loan charges the most interest in absolute pounds (£65), but as a percentage of the balance, it's the cheapest debt. The credit cards are eating him alive.

    By targeting high-interest debt first, James pays off the "expensive" debts faster, which frees up those monthly payments to attack the car loan even harder later.

    The Cascading Payment Effect

    Here's what actually happens with Avalanche strategy:

    Month 1-3: Attack store card

  32. Extra £75 + £25 minimum = £100/month total
  33. Store card paid off in ~3 months
  34. Now has £100 freed up
  35. Month 4-18: Attack credit card

  36. £100 (from store card) + £75 extra + £105 minimum = £280/month total
  37. Credit card paid off in ~15 months
  38. Now has £280 freed up
  39. Month 19-45: Attack car loan

  40. £280 (from credit cards) + £350 minimum = £630/month total
  41. Car loan demolished in ~27 months
  42. Total time: 3.7 years
  43. By paying off the high-interest debts first, James builds a payment snowball that crushes the car loan faster than if he'd started with it.

    What James Actually Did

    James chose Avalanche after running the numbers. His action plan:

  44. Froze the credit cards (literally—block of ice in the freezer)
  45. Set up autopay: £480 minimums + £75 extra to store card
  46. Tracked progress monthly
  47. Celebrated each debt payoff
  48. Adjusted when he got a small raise (added £25 extra = £100 total)
  49. With the extra £25 from his raise:

  50. Debt-free in 3.4 years instead of 3.7
  51. Saves an additional £120 in interest
  52. The Emotional Journey

    Month 3: Store card = £0. "That first zero balance was huge," James said.

    Month 18: Credit card = £0. "I'd been carrying that card for 5 years. Seeing it paid off felt like cutting off a weight."

    Month 45: Car loan = £0. DEBT-FREE. "The car finally felt like *mine*. That £480/month could go to savings and fun money."

    The Bottom Line

    When you have debts with wildly different balances and interest rates:

  53. Don't be fooled by the biggest balance. Attack the highest interest rate to save money.
  54. Quick wins matter too. If your smallest debt is very small (under £500), knock it out first for motivation.
  55. Run the numbers. Use our calculator to see how much each strategy costs.
  56. The "right" strategy is the one you'll stick with.
  57. Small extra payments compound over time. Even £50/month makes a huge difference.
  58. Use our [Debt Payoff Planner](/calculators/debt-payoff-planner) to compare strategies with your actual numbers. See your timeline. Make your plan. Then start.

    You've got this.

    Example Debts

    Current Situation

    Debt

    Car Loan

    Balance

    $12,000

    APR

    6.5%

    Monthly Pay

    $350

    Debt

    Credit Card

    Balance

    $3,500

    APR

    19.99%

    Monthly Pay

    $105

    Debt

    Store Card

    Balance

    $480

    APR

    22.99%

    Monthly Pay

    $25

    Extra money available per month: $75

    Important Notes:

    • • These numbers are planning estimates only.
    • • Interest rates can change and fees may apply.
    • • This is not personalised financial advice.
    • • If you're struggling with debt stress, please talk to a qualified financial advisor or debt support service.

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    Use our free debt payoff planner to map out your timeline with your real numbers.

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